Water heater replacement in Houston

Same-day replacement.
Most of Houston, most days.

Same-day replacement across Greater Houston, from $2,500 installed.

Leaking, rusting, or twelve years old and making sounds it shouldn’t? You need a straight answer on whether it’s worth saving, a real price if it isn’t, and hot water back tonight. Call before noon and we can usually have it running again by evening.

A.O. Smith ProLine atmospheric vent gas tank water heater, front view
A.O. Smith ProLine series

Same-day replacement.

Most replacements we quote in the morning are finished by dinner. A standard tank-for-tank swap takes our crews 2 to 4 hours.

Honest repair-or-replace math.

About a third of the replacement calls we run end in a $165 repair instead. If repair wins, we tell you on site.

Permits and code handled.

We pull the City of Houston permit and build to pass: expansion tank, drain pan, venting and strapping where required. Done right the first time.

Worth saving, or time to replace?

Water heaters rarely fail at a convenient time. It happens on a Saturday morning, with a garage full of water and a house full of people who want showers, and you have about a day to decide. We give you the same honest answer we give homeowners at their kitchen tables every week.

Read our tank replacement guide↗

Illustration of four Hot Water Guys technicians in uniform, one holding a tankless water heater and another a pipe wrench

A leaking tank can’t be repaired.

A leak from the tank itself means the steel liner has corroded through, and no part fixes that. Rust-colored water from the hot taps only is the tank telling you how this ends.

Old unit, expensive part: replace.

If your unit is past 10 years old and needs a $600 gas valve, that money is better spent on a new system with a fresh warranty.

Younger unit, failed part: repair.

If a valve, element or thermostat failed on a unit under 8 years old, repair usually wins. A 6-year-old unit with a failed thermostat? Repair it. We’ll say so on site, and our repair calls start at $165.

What replacement costs, and what’s included.

Why Houston tanks wear out.

A tank water heater in Houston lasts about 6 to 8 years, and the water is the reason. City of Houston water averaged about 8 grains per gallon of hardness in the City’s 2025 water quality report, a level the USGS classifies as hard, and those minerals eat through the sacrificial anode rods that protect the tank.

What replacement costs in 2026.

A straight tank-for-tank replacement runs $2,500 to $3,500 installed for most Houston homes: 40 or 50 gallons, gas or electric, including haul-away, the permit and the code upgrades the city checks. Larger 75-gallon tanks and power-vent models run $3,500 to $4,500. Those are real ranges, not teaser rates, and our 2026 Houston water heater cost guide breaks down what moves the price.

Upgrading from a tank to a tankless system runs $4,200 to $5,500, including the gas line work most Houston homes need. Tankless costs more up front and pays it back over years: on energy savings alone, typically 12 to 20+ years. If you plan to stay in your home for the long run, it deserves a look. If you’re selling in two years, keep the tank. We install both every day, so the only thing we care about is that the sizing is right.

Why the cheap quote costs more.

You can find someone on a marketplace app to swap a tank for $1,800. That price usually leaves out the permit the city requires, the expansion tank code demands on closed systems, the drain pan that saves your floors, and anyone who answers the phone when the relief valve drips in month three. We have redone enough of those installations to know the $700 you save today has a way of coming back with interest.

What every replacement includes.

Removal and disposal of the old unit, a new code-compliant installation with an expansion tank and pan where required, the City of Houston permit, a full system test and a walkthrough of the shutoff, the relief valve and the maintenance schedule that keeps your warranty valid. Then we register the warranty for you, because nobody ever does it themselves.

Houston inspectors check the details cut-rate installers skip: the expansion tank, the drain pan, proper venting and seismic strapping where required. We pull the permit, build to pass and hand you the paperwork.

Spot it before it fails.

The warning signs usually show up weeks before a water heater fails completely. Our guide to the signs your water heater is about to fail covers them, including the one most people ignore.

Reviewed by 1,400 Houston families.

Twenty years in, with 1,400+ five-star reviews, most of our replacement work still comes from referrals and repeat customers. That doesn’t happen by upselling tankless to people who don’t need it, or by installing the cheapest tank the supply house had that morning. We install Rheem, A.O. Smith and Bradford White.

REPLACEMENT PRICING

$2,500 to $4,500 installed

Haul-away, the City of Houston permit and the required code upgrades are included.

Real prices,
no teaser rates.

Most 40- or 50-gallon tank swaps run $2,500 to $3,500, and larger 75-gallon or power-vent models $3,500 to $4,500. The tank size, the fuel type and the code upgrades your home needs decide the final number.

Call 832-673-0909 for a transparent estimate over the phone, so you know what to expect before we arrive. Thinking about tankless instead? A tank-to-tankless conversion runs $4,200 to $5,500 with the gas line work most homes need.

From the first call
to the final walkthrough.

Four steps, and on most days, hot water back the same day.

01

Same-day assessment.

Call before noon, and we’ll look at the unit and give you a straight answer on whether it’s worth saving.

02

Repair or replace, with real numbers.

Both prices go in front of you. If a repair makes more sense, that’s what we recommend.

03

Code-compliant installation.

We drain the old unit, set the new one and bring the connections up to current code, with an expansion tank and pan where required.

04

Haul-away, permit and walkthrough.

We haul the old tank away, handle the permit, test the system and show you the shutoff, the relief valve and the maintenance schedule.

Tanks on the truck,
ready to install.

We keep Rheem, A.O. Smith and Bradford White units in stock, and our trucks carry 40- and 50-gallon gas and electric tanks, expansion tanks, pans and every fitting a standard swap needs. Same-day tank replacements cover 40 to 80 gallons, gas and electric, and we install tank or tankless the same day in most cases, including tank-to-tankless conversions. With the parts on the truck, a standard swap needs no second trip.

Manufacturer tank warranties run 6 to 12 years depending on the model, plus our labor warranty on every installation. We register your warranty before we leave.

Sometimes the answer
is a $165 repair.

About a third of the replacement calls we run end in a $165 repair instead. That costs us revenue and earns us the next twenty years of your plumbing work. We’re comfortable with that trade.

If the tank itself is leaking, replacement is the only fix. If a valve, element or thermostat failed on a unit under 8 years old, repair usually wins. Between those two, we put both numbers in front of you and let the math decide.

Serving Greater Houston.

Confirm the service address and project with the team. Some areas are subject to an additional travel fee.

Questions when the tank gives out.

How much does it cost to replace a tank water heater in Houston?

A full tank replacement in Houston typically runs $2,500 to $4,500, depending on the tank size, the fuel type (gas or electric) and any code-required upgrades, such as an expansion tank, new venting or a drip pan. We give transparent estimates over the phone, so you know what to expect before we arrive.

Should I repair or replace my tank water heater?

If your tank is under 8 years old and the repair costs less than 50% of a new installation, repair is almost always the better financial decision. If the tank itself is leaking (not a fitting or valve), the unit is 10+ years old with multiple component failures, or the hot tap runs rust-colored, replacement is the smarter move. We’ll show you the numbers for both, and we never pressure anyone into a replacement.

How long does a tank water heater installation take?

A standard tank-to-tank replacement typically takes 2 to 4 hours. That covers draining and removing the old unit, setting the new tank, connecting the water and the gas or electric lines, and a full safety inspection. If code upgrades are needed, such as adding a drip pan or an expansion tank or updating the venting, the job may take another 1 to 2 hours.

How long do tank water heaters last in Houston?

A standard tank in Houston typically lasts 6 to 8 years. Houston’s hard water speeds up sediment buildup and anode rod depletion, which shortens tank life compared with the national average. Annual sediment flushing and an anode rod replacement every 3 to 4 years are the two most effective ways to get the most from a tank. If yours is over 10 years old and showing signs of corrosion or frequent problems, it may be time to consider a replacement.

What size tank water heater do I need for my Houston home?

For most Houston households, a 40-gallon tank suits 1 to 2 people, a 50-gallon tank works for 3 to 4, and a 75-gallon or larger tank is recommended for 5 or more. Your real need depends on peak-hour demand: how many showers, appliances and faucets run at the same time during your busiest hour. We calculate your first-hour rating (FHR) on the site visit and recommend the right size.

Leaking or
rusting out?

Call before noon and most days you’ll have hot water again by evening. If a repair makes more sense, we’ll tell you on site.

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